Razor-sharpening machine.



G. BURSGH.

RAZOR SHARPENING MACHINE.

APPLICATION FILED NOV 20, 1912.

1,090,,1 97. Patented Mar. 17, 1914.

2 SHEETS-SHEET 1.

00 f i Vzinecs ses; In W601 G. A. BURSGH.

RAZOR SHARPENING MACHINE.

APPLICATION FILED NOV. 20, 1912. 1,090, 1 97. Patented Mar. 17, 1914.

2 BHEETS-BHEBT 2.

lnrlllllllllll inesses. lfiweniar" C /z414l /QZ/ m A9 GUSTAVUS A.BURSCH, OF BROOKLYN; NEW YORK.

RAZOR-'SHARPENING MACHINE.

Specification of Letters Patent.

Application filed November 20, 1912.

Patented Mar. 17,1914.

Serial No. 732,406.

To all whom it may concern Be it known that I, GUsTAvUs A. Bunsen, acitizen of the United States, and resident of Brooklyn, in the county ofKings and State of New York, have invented certain new and usefulImprovements in Razor- Sharpening vMachines, of which the following is aspecification.

This invention relates to razor sharpening machines, and particularly tothat class of razor sharpening machines in which lateralmotion is givento the sharpening element, in conjunction with longitudinal movement ofthe razor, to give a draw stroke action to the razor edge in sharpening.

The principal object of. the invention is to provide a razor sharpeningmachine of this type, which shall be very compact, strong and simple.

Another object is to provide improved means for changing from the honingoperation to the stropping operation.

The means I employ to attain these results and various advantagesof myim proved razor sharpening machine are illustrated in the accompanyingdrawings, in which,-

Figure 1 is a plan of the preferred form of my improved razor sharpeningmachine, arranged for honing. Fig. 2 is a side elevation of the same.Fig. 3 is a plan of the under side of the razor sharpening machine. Fig.4 is a section on the line 4- 1 of Fig. 1. Fig. 5 is a section on theline 5--5 of Fig. 1. Fig. 6 is a side elevation of machine arranged forstropping. Fig. 7 is a perspective view of the holder for the sharpeningmember.

Like characters refer to like parts in all figures of the drawings.

The frame 2 of myimproved razor sharpening machine, consists of abox-like construction, having sides 3 and ends 4, and a handle 5attached to the middle part of one of the end-pieces. The sides and endsare fastened by suitable means, such as the screws 6, and each end-pieceis provided with grooves -or guides 7.

The sharpening element or member 8, is provided with a honing surface 9and a stropping surface 10, and has a pivot pin 11 at each end. Theholder 12 for the sharpening member is a channel-shaped piece of metalhaving a base 13 and end walls 14, in WhlCl'l are slots 15 to journalthe pins 11 of the sharpening member. Flanges 17 are provided at eachend of the holder, and are fastened to the base by suitable means, suchas the rivets 18. A zigzag slot 19 is formed in the middle of the base,and extends to near the end walls. The sharpening member 8 is mounted byits pins 11 in the slots 15 as illustrated in Figs. 1 and 4, and has aslight oscillatory movement on its axis, so as to adjust its sharpeningsurfaces to a razor blade, when the latter is drawn over it forsharpening.

The holder is mounted in the frame 2, with its flanges 17 in the grooves7 of the end-pieces, and the width of the holder and sharpening memberbeing less than the width of the opening 20 in the frame, there istherefore room for a lateral movement of the holder and sharpeningmember guided by the flanges 17 in the grooves 7.

The sharpening element is reversible, so that either the honing or thestropping surface can be placed uppermost'as desired, and the reversingof the member is accomplished by first raising one end and drawing itout of the holder lengthwise, as illustrated in Fig. 2 at 8', thenturning it over, and placing it in position again in the holder.

The carriage 2]. is provided with a base 22, side walls 23, ablade-holder 24 and guides 25 and 25, and it is movably mounted on theside-pieces 3 of the frame 2, and can freely slide over the frame forthe greater part of its length. A pin 26 is fixed in the base of thecarriage, and extends up into the zigzag slot 19. As the carriage ismoved to and fro on the frame, lateral movement, to and fro, is impartedto the sharpening member and its holder.

The bladeholder is composed of a shaft 27, and two thin )lates 28 and 29riveted to the shaft and whlch are adapted to clamp a razor blade, asillustrated in Figs. 2, 4 and 6, where a safety-razor blade B is shownclamped into the blade-holder 24:. At the right hand end of theblade-holder 24 is a pinion 30, and mounted on the right hand side ofthe carriage is a gear 31, on a stud 32, meshing with the pinion 30. Thegear 32 has pins 33 and 34, and a handle or knob 35 is provided, whichfits either one of the pins and it has suitable meansfor holding i it inplace on a pin, consisting of the pushed lengthwise of the machine bythe other hand, so that the carriage 21 is moved to and fro on theside-pieces 3. The razor blade B is therefore moved back and forth withits edge forward, on the honing surface 9, downward pressure beingcommunicated to the edge of the blade from the handle 35, through thegearing and bladeholder. The honing surface is given lateral movement,to and fro, by means of the pin 26 moving in the zigzag slot 19, so thata keen and uniform cuttin edge is given to the razor blade. The bla e isthen stropped by arranging the machine as shown in Fig. 6, where thestropping surface 10 is placed uppermost, ahd the handle is laced on thepin-34;. By giving a to and r0 move-' ment to the carriage, by means ofthe handle 35, the blade is stropped on the stroppmg surface 10. Theedge of the blade 1s dragged 3o behind the blade-holder, just oppositeto its position in honing, and this is due to the reversal of thepressure through the gearing on account of the change in position of thehandle 35. The lateral movement of the 35 sharpening member is similarto that in the honing operation. The blade is automatically turned overat the end of each stroke in both the honing and the stroppingmovements, by the reversal of the hand pressure 40 on the handle 35,when the carriage reaches the end of its travel and is-moved in theopposite direction.

It is found to be very advantageous to have considerable frictionalresistance between the frame and the portions of the carriage that comein contact with it, to give steady operation of the parts of themechanism, and this resistance is provided by having a gib or shoe 40,which has a ridge at each end to retain it in position, and a pair ofadjusting screws 41 to regulate the amount of pressure on the frame. Bythese means the friction between the frame and carriage can be adjustedto the right amount to give steady action.

1. In a razor sharpening machine, the combination of a portable frame, asharpening element mounted therein for lateral movements, a carriageslidably mounted on said frame and provided with blade holding meansextending across said sharpening element, means to reciprocate saidcarriage, and connections between said carriage and $5 said sharpeningelement whereby the longiing element being of less width than said frameand movably carried by said guides, said sharpening element havingassociated therewith a zig-zag slot, a carriage encircling the frame andmovable longitudinally thereof and provided with blade holding meansspanning said sharpening element, and a member carried bysaid carriagefor engaging in said slot for giving lateral movements to the sharpeningelement in conjunction with longitudinal movements of the carriage.

3. A razor sharpening machine comprising a frame, a sharpening elementmounted therein for lateral movements, a carriage encircling said frameand sharpening element and slidably mounted on the frame, said carriageprovided with blade holding means spanning the sharpening element,connections between said carriage. and the sharpening element whereby alongitudinal movement of the carriage produces a lateral movement of thesharpening element.

4. A razor sharpening machine comprising a-rectangular frame having endand side members, a sharpening element supported by said end members andmovable laterally of the frame, a carriage slidably mounted'on said sidemembers and provided with blade holding means extending across thesurface of said sharpening element, and connections between saidcarriageand said sharpening element whereby a longitudinal movement of thecarriage produces a lateral movement of the sharpening element.

5. A razor sharpening machine comprising a frame, a sharpening elementmounted therein for lateral movements, a carriage slidably mounted onsaid frame, blade holding means carried bysaid carriage, and meanscarried entirely by said carriage to reverse the position of the bladeholdin means when the direction of motion of sai carriage is changed.

6. In a razor sharpening machine,a strop or hone, a carriage movablelengthwise of the strop or hone, a blade-holder having a shaft movablysupported on the carriage over said strop or hone, a gear on said shaft,a second gear mounted on the side of the carriage and meshing with saidshaft gear, two pins on said second gear, and a handle adapted to fit onone or the other of said pins.

7. In a razor sharpening machine, the combination of a strop or hone, aframe, a carriage having wa s and mounted on said frame for longitudmalmovement and also 1 0 having a air of journals, a blade-holder Signed atNew York, in the county of having a s aft mounted over the strap or NewYork, and State of New York, this 18th hone in said journals, a gear onsaid shaft, day of November, A. D. 1912.

a second gear mounted on said carriage and GUSTAVUS A. BURSCH. meshingwith the shaft gear, a handle, and Witnesses:

means for supporting it in either of two ALVIN SUMMERS,

positions on said second gear. CHARLES D. KING.

